12 Pcs 2 Channel 5.5x2.1mm DC Power Spliter 1 Female to 2 Male for CCTV Camera Cable Lengh 20cm 8inch Skywalking Convenient and cost effective way to power up 2 cameras with 1 power adapter 1 Female to 2 Male DC Power Splitter Cable Total Length: 20cm(8inch) Female: - Hole Diameter: 5.5mm - Pin Diameter: 2.1mm Male - Outside Diameter: 5.5mm - Inside Diameter: 2.1mm